Improved screwvfiiate



`WlLLijAivl BON n AND JOHN WRoA'rH, or SANDY H1LL',NEW YORK.y

` "Laim Patent No; 90,151, dated Ma@ 1s, 1ste. y

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.l'ho` Schedule referred to in these Lettera Patent and m'aking part of the siamo.'

Beit known that we, WILLIAM BOND and JOHN. WROATH, of the village of Sandy Hill, in they county of .Washingtom and State of New York, have invented certain new and useful Improvements in Screw-Plate;

and we do herebyjdeclare that the following isa full,

i i clear, and exact description thereof, reference being had to the accompanying drawings, and tothe letters `of reference marked thereon, which form a partof this speciioatiom and in which--` Figure-lrepresents along'itudinal section,and y Figure 2, a plan view of our screw-plate. f Similar letters of reference indicate like parts in both figures. i y `Our invention relates to improvement-sin screwplates; and to this end it` consists in the employment of a stock or frame provided with screw-plates, and ad- Y justable -screwl-lever, in combination with such otherl devices, the peculiar-ity of which will be herein fully set.

forth;

,To enable othersskilled inthe artto which' our inf lvention appertains, to makeand use the same, we will now describe its construction and operation.

In the accompanying drawings- A represents the stock or frame of the screw-plate, .l with its lower end hollowed out, as seen in fig. 1. f B B represent the screw-plates, one being made stationary, whilethe other is notched ont at ends so Y as "to slide up and down on the screws a a.

O C are projections formed on` one side of the stockv A.' In these projectionsis pivoted, at its centre, thelever D, the lever being made as seen in fig. 1, its lower end passing through mortise d, formed in the lower end of i stock A, and resting Aagainst sliding screw-plate B,

while the. other, end of the lever rests against screw E, i

which passes' through the upper part of stock A.

By this arrangement thesorew, plates `B B may be so adjusted as to cut any-sized screw.

F is 'the lever for operating the machine, and is'- secured to the upper end of the stock A. Having thus described our invention,`

Whatwe claim as new, and desire to secure by Leti The arrangement,substantially as described, of the i stock A, lever D, screw E, handle F. and steading-dies vB'B,for the purpose set forth. i

In testimony that we claim the foregoing as' our own, we aiiix oursignatures, in presence of two witnesses.

W'M; BOND. v JOHN WROATH.' i a, Witnesses:

y D. E. PARKS,

.EL E. BAKER.4 i 

